Example #1
0
func (sg *OpenGLGraphics) Text(x, y int, t string, align string, rot int, f chart.Font) {
	if len(align) == 1 {
		align = "c" + align
	}

	_, fh, _ := sg.FontMetrics(f)
	tex := glh.MakeText(t, float64(fh))
	tex.Flipped = true
	defer tex.Destroy()

	switch align[0] {
	case 'b':
	case 'c':
		y += fh / 2
	case 't':
		y += fh
	default:
		log.Panicf("Unknown alignment: ", align)
	}

	switch align[1] {
	case 'l':
	case 'c':
		x -= tex.W / 2
	case 'r':
		x -= tex.W
	default:
		log.Panicf("Unknown alignment: ", align)
	}

	if f.Color == nil {
		gl.Color4f(1, 1, 1, 1)
	} else {
		glh.ColorC(f.Color)
	}

	glh.With(tex, func() {
		tex.Draw(x, y)
	})
}
Example #2
0
File: main.go Project: pwaller/mema
func main_loop(data *ProgramData) {
	start := time.Now()
	frames := 0
	lastblocks := 0

	// Frame counter
	go func() {
		for {
			time.Sleep(time.Second)
			if *verbose {
				memstats := new(runtime.MemStats)
				runtime.ReadMemStats(memstats)
				fps := float64(frames) / time.Since(start).Seconds()
				blocks := len(data.blocks)
				bps := float64(blocks-lastblocks) / time.Since(start).Seconds()
				lastblocks = blocks
				log.Printf("fps = %5.2f; blocks = %4d; bps = %5.2f sparemem = %6d MB; alloc'd = %6.6f; (+footprint = %6.6f)",
					fps, len(data.blocks), bps, SpareRAM(), float64(memstats.Alloc)/1024/1024,
					float64(memstats.Sys-memstats.Alloc)/1024/1024)

				PrintTimers(frames)
			}
			start = time.Now()
			frames = 0
		}
	}()

	// Necessary at the moment to prevent eventual OOM
	go func() {
		for {
			time.Sleep(5 * time.Second)
			if *verbose {
				log.Print("GC()")
			}
			runtime.GC()
			if *verbose {
				GCStats()
			}
		}
	}()

	var i int64 = -int64(*nback)

	// TODO(pwaller): Make this work again
	// text := glh.MakeText(data.filename, 32)

	// Location of mouse in record space
	var rec, rec_actual int64 = 0, 0

	var stacktext, dwarftext []*glh.Text
	var recordtext *glh.Text = nil

	var mousex, mousey, mousedownx, mousedowny int
	var mousepx, mousepy float64
	var lbutton bool
	escape_hit := false

	glfw.SetMouseWheelCallback(func(pos int) {
		nback_prev := *nback
		if pos < 0 {
			*nback = 40 * 1024 << uint(-pos)
		} else {
			*nback = 40 * 1024 >> uint(pos)
		}
		//log.Print("Mousewheel position: ", pos, " nback: ", *nback)

		if rec == 0 {
			return
		}

		// mouse cursor is at screen "rec_actual", and it should be after
		// the transformation

		// We need to adjust `i` to keep this value constant:
		// rec_actual == i + int64(constpart * float64(*nback))
		//   where constpart <- (-const + 2.) / 4.
		// (that way, the mouse is still pointing at the same place after scaling)

		constpart := float64(rec_actual-i) / float64(nback_prev)

		rec_actual_after := i + int64(constpart*float64(*nback))
		delta := rec_actual_after - rec_actual
		i -= delta

		// Ensure the mouse cursor position doesn't change when zooming
		rec = rec_actual - i
	})

	update_text := func() {
		if DoneThisFrame(RenderText) {
			return
		}

		if recordtext != nil {
			recordtext.Destroy()
			recordtext = nil
		}
		//r := 0 //data.GetRecord(rec_actual)
		//if r != nil {
		//log.Print(data.records[rec_actual])
		//recordtext = MakeText(r.String(), 32)
		//}

		for j := range stacktext {
			stacktext[j].Destroy()
		}
		// TODO: Load records on demand
		if false {
			stack := data.GetStackNames(rec_actual)
			stacktext = make([]*glh.Text, len(stack))
			for j := range stack {
				stacktext[j] = glh.MakeText(stack[j], 32)
			}
		}
	}

	glfw.SetMouseButtonCallback(func(button, action int) {
		switch button {
		case glfw.Mouse1:
			switch action {
			case glfw.KeyPress:
				mousedownx, mousedowny = mousex, mousey
				lbutton = true

				r := data.GetRecord(rec_actual)
				if r != nil {
					if r.Type == MEMA_ACCESS {
						log.Print(r)
						ma := r.MemAccess()
						dwarf := data.GetDwarf(ma.Pc)
						log.Print("Can has dwarf? ", len(dwarf))
						for i := range dwarf {
							log.Print("  ", dwarf[i])
							//recordtext = MakeText(data.records[rec_actual].String(), 32)

						}
						log.Print("")

						for j := range dwarftext {
							dwarftext[j].Destroy()
						}
						dwarftext = make([]*glh.Text, len(dwarf))
						for j := range dwarf {
							dwarftext[j] = glh.MakeText(fmt.Sprintf("%q", dwarf[j]), 32)
						}
					}

					//recordtext = MakeText(data.records[rec_actual].String(), 32)
				}

			case glfw.KeyRelease:
				lbutton = false
			}
		}
	})

	glfw.SetMousePosCallback(func(x, y int) {

		px, py := glh.WindowToProj(x, y)
		// Record index
		rec = int64((py+2)*float64(*nback)/4. + 0.5)
		rec_actual = rec + i

		dpy := py - mousepy
		di := int64(-dpy * float64(*nback) / 4.)

		if lbutton {
			i += di
		}

		mousepx, mousepy = px, py
		mousex, mousey = x, y

		//log.Printf("Mouse motion: (%3d, %3d), (%f, %f), (%d, %d) dpy=%f di=%d",
		//x, y, px, py, rec, rec_actual, dpy, di)

		update_text()
	})

	glfw.SetKeyCallback(func(key, state int) {
		switch key {
		case glfw.KeyEsc:
			escape_hit = true
		}
	})

	draw_mousepoint := func() {

		// Draw the mouse point
		glh.With(glh.Matrix{gl.MODELVIEW}, func() {
			gl.Translated(0, -2, 0)
			gl.Scaled(1, 4/float64(*nback), 1)
			gl.Translated(0, float64(rec), 0)

			gl.PointSize(10)
			glh.With(glh.Primitive{gl.POINTS}, func() {
				gl.Color4f(1, 1, 1, 1)
				gl.Vertex3d(mousepx, 0, 0)
			})
		})
	}

	draw_text := func() {
		// Draw any text
		glh.With(glh.WindowCoords{}, func() {
			w, h := glh.GetViewportWHD()

			glh.With(glh.Attrib{gl.ENABLE_BIT}, func() {
				gl.Enable(gl.TEXTURE_2D)
				// text.Draw(0, 0)
				for text_idx := range stacktext {
					stacktext[text_idx].Draw(int(w*0.55), int(h)-35-text_idx*16)
				}
				for text_idx := range dwarftext {
					dwarftext[text_idx].Draw(int(w*0.55), 35+text_idx*16)
				}
				if recordtext != nil {
					recordtext.Draw(int(w*0.55), 35)
				}
			})
		})
	}

	Draw = func() {

		gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

		// Draw the memory access/function data
		data.Draw(i, *nback)

		draw_mousepoint()
		draw_text()

		// Visible region quad
		// gl.Color4f(1, 1, 1, 0.25)
		// DrawQuadd(-2.1, -2.25, 4.4, 2.1 - -2.25)

		// StatsHUD()
	}

	interrupt := make(chan os.Signal)
	signal.Notify(interrupt, os.Interrupt)
	ctrlc_hit := false
	go func() {
		<-interrupt
		ctrlc_hit = true
	}()

	done := false
	for !done {
		done_this_frame = make(map[WorkType]bool)

		glh.With(&Timer{Name: "Draw"}, func() {
			Draw()
		})

		glfw.SwapBuffers()

		DoMainThreadWork()

		done = ctrlc_hit || escape_hit || glfw.WindowParam(glfw.Opened) == 0
		frames += 1
	}
}